Apps, social media pushing back sleep time over 1.5 hrs

​A study has revealed that the use of internet for Facebook and WhatsApp is making people put off sleep by more than one and a half hours (100 minutes) every day .Kamini Mathai | TNN | March 18, 2017, 08:17 IST

Is WhatsApp keeping you up way past your bedtime? Yo u're not the only one, say doctors at Bengaluru-based National Institute of Mental Health and Neuro Sciences (Nimhans).

A study has revealed that the use of internet for Facebook and WhatsApp is making people put off sleep by more than one and a half hours (100 minutes) every day .

In a 2016 study by the Service for Healthy Use of Technology (SHUT) clinic at Nimhans, researchers found that use of internet was also making people wake up 90 minutes later.

The study , published in January in the Indian Journal of Occupational and Environmental Medicine, also fo und that while the quality of sleep was above average, most people usually checked their phones and tablets at least four times after going to bed.

A 2015 study by a private hospital in Gurgaon revealed that 90% of young heart attack victims were those who did not sleep well. The application keeping most people up was WhatsApp (58.5%), says psychiatrist Dr Manoj Kumar Sharma, additional professor at SHUT clinic and one of the lead researchers of the study. “This was followed by Facebook usage (32.6%).Messenger applications other than WhatsApp and Hike were used rarely (65.7%).Gmail was shown to be frequently used by participants (45.3%)," he adds.

The research, says Sharma, also showed that 60% of the participants used their mobile phone along with devices such as desktops, laptops and tablets at home as well; 42% of the participants acknowledged that they put off work just to be on the in ternet.

Dr Suresh Kumar, neurophysician at Chennai-based Sree Balaji Medical College and Hospital, says he is seeing more patients with “delayed sleep phase syndrome (DSPS)," where instead of the usual sleep cycle of eight hours from around 10pm to 6am, people are going to bed only by 3am and waking up at 11am. “It's not just adults; children too are sleeping at 1am because they are on the internet or mobile phone and this is causing drowsiness in classrooms," he says.

Doctors say people with DSPS, otherwise referred to as “social jet lag“, are not successful at maintaining normal 9-5 workdays and complain of fatigue, headache, decreased appetite or depressed moods.